Vibrator up the ass. Sounds gross but it's true.
YES
Steroids are synthetic, they are chemicals made which have the same structure as male testosterone, some can also be extracted from stem cells of certain plants, herbs, and also extracted from animals.
No, it is a hormone, made only by animals.
epinepherine
you cut them open and look in the cell
by animals and humans breathing out
Testosterone gives rise to male characteristics in animals. Male birds sing. Maturation of male sex glands and facilitation in process of male reproduction is the function of testosterone in the male animal. In female testosterone is present in fraction of the quantity present in male. It helps cellular function in brain, muscle and other body tissues giving vitality to animals both male and female.
With pigments extracted from plants and animals.
Cortisone
The Predominant hormone in males are testosterone
Some oxygen gas is dissolved in the water and can be extracted via gills.
Testosterone